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Halogen-free flame retardant continuous long glass fiber reinforced polyamide 66 composite material and preparation method thereof

A composite material and polyamide technology, which can be used in coatings and other directions to solve the problems of high temperature decomposition of halogen-free flame retardants

Active Publication Date: 2013-04-17
JIANGSU KINGFA SCI & TECH ADVANCED MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the deficiencies in the above prior art, the present invention provides a halogen-free flame-retardant continuous long glass fiber reinforced polyamide 66 composite material and its preparation method. The composite material is reinforced by continuous long glass fiber to make halogen-free Flame-retardant polyamide 66 is high-performance, and the existing preparation process is improved, which solves the shortcoming of high-temperature decomposition of halogen-free flame retardants in the soaking process

Method used

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  • Halogen-free flame retardant continuous long glass fiber reinforced polyamide 66 composite material and preparation method thereof
  • Halogen-free flame retardant continuous long glass fiber reinforced polyamide 66 composite material and preparation method thereof

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Effect test

Embodiment 1

[0020] The first step: 15 kg of polyamide 66 153HSL is plasticized by a single screw extruder with a length-to-diameter ratio of 20:1, and then transported to a high-temperature melt infiltration tank through a die. The temperature in the tank of the high-temperature melt infiltration tank is 320 ℃, and the length of the high temperature melt infiltration tank is 2m;

[0021] Step 2: Pass 57.5 kg of polyamide 66 153HSL, 2 kg of toughening agent 493D, 0.2 kg of phenolic heat stabilizer 1010, 0.3 kg of phosphite antioxidant 168, and 10 kg of Klein flame retardant OP 1312 through the long diameter After plasticization by a single screw extruder with a ratio of 20:1, it is transported to a low-temperature melt infiltration tank through a die, the temperature in the tank of the low-temperature melt infiltration tank is 275 °C, and the length of the low-temperature melt infiltration tank is 1m;

[0022] Step 3: Pass 15kg of continuous long glass fiber Tufrov 4510 produced by PPG com...

Embodiment 2

[0026] The first step: 20 kg of polyamide 66 71G13L was plasticized by a single-screw extruder with a length-to-diameter ratio of 20:1, and then transported to a high-temperature melt infiltration tank through a die. The temperature in the tank of the high-temperature melt infiltration tank was 340 ℃, and the length of the high temperature melt infiltration tank is 2m;

[0027] The second step: pass 40 kg of polyamide 66 71G13L, 4 kg of toughening agent 560D, 0.5 kg of phenolic heat stabilizer 1010, 0.5 kg of phosphite antioxidant 627A, and 15 kg of Klein flame retardant OP 1311 through the long diameter After plasticization by a single screw extruder with a ratio of 20:1, it is transported to a low-temperature melt infiltration tank through a die, and the temperature in the tank of the low-temperature melt infiltration tank is 280 ° C, and the length of the low-temperature melt infiltration tank is 1m;

[0028] The third step: Pass 20 kg of continuous long glass fiber Tufrov ...

Embodiment 3

[0032] The first step: 20 kg of polyamide 66 70K20HSL is plasticized by a single screw extruder with a length-to-diameter ratio of 20:1, and then transported to a high-temperature melt infiltration tank through a die. The temperature in the tank of the high-temperature melt infiltration tank is 360 ℃, and the length of the high temperature melt infiltration tank is 2.5m;

[0033] The second step: 33.5 kg of polyamide 66 70K20HSL, 5 kg of toughener Bondyram 7003, 0.8 kg of phenolic heat stabilizer 1010, 0.7 kg of phosphite antioxidant 627A, 10 kg of Klein flame retardant OP1230 and 5 kg of The flame retardant MPP is plasticized by a single-screw extruder with a length-to-diameter ratio of 20:1 and then transported to a low-temperature melt infiltration tank through a die. The length of the body infiltration tank is 1.5m;

[0034] Step 3: Pass 25 kg of continuous long glass fiber Tufrov 4588 produced by PPG Company through the high temperature melt tank in the first step and th...

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Abstract

The invention discloses a halogen-free flame retardant continuous long glass fiber reinforced polyamide 66 composite material which comprises the following ingredients by weight percent: 42-72.5% of polyamide 66, 2-6% of flexibilizer, 10-20% of halogen-free flame retardant, 0.5-2.0% of heat stabilizer and 15-30% of long glass fiber, wherein the relative viscosity of the polyamide 66 is 2.0-3.0; and the long glass fiber is an LFT (Long Fiber Thermoplastic) alkali-free continuous long glass fiber specially used for polyamide 66. The prepared material has high fluidity, excellent heat resistance, high rigidity, high impact, high size stability, excellent flame retardant property and high CTI (comparative tracking index) value; through detection, the tensile strength of the material is not less than 150MPa, the flexural modulus is not less than 7000MPa, the notch impact strength is not less than 15KJ / m<2>, the heat distortion temperature (1.80MPa) is not less than 250 DEG C, the flame retardant grade is UL94 1.6mmV-0, and the CTI value is not less than 500V; and moreover, the defect in halogen-free flame retardant high temperature decomposition is solved by using a technique of high-low-temperature double-melting body infiltration tank serial connection.

Description

technical field [0001] The invention relates to a halogen-free flame-retardant polymer composite material, in particular to a halogen-free flame-retardant long glass fiber reinforced polyamide 66 composite material and a preparation method thereof. Background technique [0002] Glass fiber reinforced polyamide 66 products have excellent comprehensive application performance and are widely used in electronic and electrical fields. With the increasing awareness of the environment in the whole society, halogen-free flame retardant has become the mainstream of the development of glass fiber reinforced polyamide 66 technology. However, in order to achieve V-0 halogen-free flame retardant, glass fiber reinforced polyamide 66 needs to add a lot of halogen-free flame retardants, which will seriously reduce the mechanical properties of glass fiber reinforced polyamide 66 materials, especially the notched impact strength. If the reinforced glass fiber of halogen-free flame retardant ...

Claims

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Application Information

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IPC IPC(8): C08L77/06C08K13/04C08K7/14B29B15/10
Inventor 孙刚周英辉李国明程文超李欣李志平陈延安丁超罗忠富
Owner JIANGSU KINGFA SCI & TECH ADVANCED MATERIALS CO LTD
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